Patent US3206899A successfully refreshed from Google Patents.
US3206899A
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Walled structure and method for making the same
Assignee: Dow Chemical Co
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Filing: 1961-01-09
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Granted: 1965-09-21
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Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Donald R Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:41
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/04; B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C65/34; B29C65/3404; B29C65/344; B29C65/3468; B29C65/3472; B29C65/3476; B29C65/36; B29C65/3604; B29C65/362; B29C65/364; B29C65/3668; B29C65/3672; B29C65/3676; B29C65/56; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/303; B29C66/3034; B29C66/30341; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/4326; B29C66/4329; B29C66/45; B29C66/70; B29C66/72; B29C66/727; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/83; B29C66/836; B29C66/8362; B29D; B29D25/00; E04B; E04B1/00; E04B1/32; E04B1/3211; E04B1/35; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/14; B29C66/71; B29C66/721; B29C66/7212; B29C66/90; B29C66/96; B29C66/964; B29K; B29K2105/00; B29K2105/04; B29K2105/25; B29K2105/253; B29K2105/255; B29L; B29L2031/00; B29L2031/10; B29L2031/106; E04B2001/3217; E04B2001/3229; E04B2001/3258; E04B2001/3264; Y; Y10; Y10S; Y10S425/00; Y10S425/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A HOLLOW CLOSED WALLED STRUCTURE OF GENERALLY DOME SHAPED CONFIGURATION COMPRISING A CONTINUOUS PRE-CUT COMPOSITE CELLULAR PLASTIC STRIP DISPOSED IN SUPERPOSED TURNS AS A SPIRAL AND DEFINING SAID DOME SHAPED CONFIGURATION, SAID PLASTIC STRIP HAVING THE LOWER SURFACE OF SAID STRIP
Claim 2
Dependent Claim
41 words
A HOLLOW CLOSED WALLED STRUCTURE OF GENERALLY DOME SHAPED CONFIGURATION COMPRISING A CONTINUOUS PRE-CUT COMPOSITE CELLULAR PLASTIC STRIP DISPOSED IN SUPERPOSED TURNS AS A SPIRAL AND DEFINING SAID DOME SHAPED CONFIGURATION, SAID PLASTIC STRIP HAVING THE LOWER SURFACE OF SAID STRIP
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |